//显示日期
//时间计算
export function showtime(time) {
	let date =
		typeof time === "number" ?
		new Date(time) :
		new Date((time || "").replace(/-/g, "/"));
	let diff = (new Date().getTime() - date.getTime()) / 1000;
	let dayDiff = Math.floor(diff / 86400);
	let year = new Date().getFullYear()
	let nowyear = new Date(time).getFullYear()
	let isValidDate =
		Object.prototype.toString.call(date) === "[object Date]" &&
		!isNaN(date.getTime());

	if (!isValidDate) {
		window.console.error("不是有效日期格式");
	}
	// const formatDate = function(date) {
	// 	let today = new Date(date);
	// 	let year = today.getFullYear();
	// 	let month = ("0" + (today.getMonth() + 1)).slice(-2);
	// 	let day = ("0" + today.getDate()).slice(-2);
	// 	let hour = today.getHours();
	// 	let minute = today.getMinutes();
	// 	let second = today.getSeconds();
	// 	return `${year}-${month}-${day} ${hour}:${minute}:${second}`;
	// };

	// if (isNaN(dayDiff) || dayDiff < 0 || dayDiff >= 31) {
	// 	return formatDate(date);
	// }
	return (
		(dayDiff === 0 &&
			((diff < 60 && "刚刚") ||
				(diff < 120 && "1分钟前") ||
				(diff < 3600 && Math.floor(diff / 60) + "分钟前") ||
				(diff < 7200 && "1小时前") ||
				(diff < 86400 && Math.floor(diff / 3600) + "小时前"))) ||
		(dayDiff === 1 && "昨天") ||
		(dayDiff < 7 && dayDiff + "天前") ||
		// (dayDiff < 31 && Math.ceil(dayDiff / 7) + "周前")||
		(year == nowyear && time.slice(5)) ||
		(year > nowyear && time)
	);
}
//获取当前周数
export function getWeekInYear(date) {
	// console.log(date)
	//判断该星期是否跨年，如果跨年就是第一周
	let weekStartDate = getWeekStartByDate(date) //一周开始时间
	// console.log(weekStartDate,'weekStartDate')
	let endDate = getDateFromDay(weekStartDate, 6) //一周结束时间
	// console.log(endDate,'endDate')
	if (weekStartDate.getFullYear() != endDate.getFullYear()) {
		// console.log(endDate.getFullYear() + '年第1周')
		let num = 1
		return num
	}
	let d1 = new Date(date)
	let d2 = new Date(date)
	d2.setMonth(0)
	d2.setDate(1)
	d2 = getWeekStartByDate(d2)
	// console.log(d2,'d2')
	let rq = d1 - d2
	let days = Math.ceil(rq / (24 * 60 * 60 * 1000)) + 1
	let num = Math.ceil(days / 7)
	// console.log(endDate.getFullYear() + '年第' + num + '周')
	return num
}

function getWeekStartByDate(date) {
	let day = new Date(date).getDay() == 0 ? 6 : new Date(date).getDay() - 1
	return getDateFromDay(date, -day)
}

function getDateFromDay(dayDate, day) {
	let date = new Date()
	date.setTime(new Date(dayDate).getTime() + day * 24 * 60 * 60 * 1000)
	return date
}


//获取本周一周日期
export function getNowWeekList(data) {
	let now = new Date(data); // 当前日期
	let nowTime = now.getTime()
	let nowDayOfWeek = now.getDay() == 0 ? 6 : now.getDay() - 1; // 今天本周的第几天
	let dayList = []
	let startTime = uni.$u.timeFormat((nowTime - nowDayOfWeek * 86400000), 'yyyy-mm-dd');
	let start = new Date(startTime).getTime()
	dayList.push(startTime)
	for (let i = 1; i < 7; i++) {
		dayList.push(uni.$u.timeFormat((start + i * 86400000), 'yyyy-mm-dd'))
		if (i == 6) {
			return dayList
		}
	}
}

//获取树形结构
export function handleTree(data, id, parentId, children) {
	let config = {
		id: id || 'id',
		parentId: parentId || 'parentId',
		childrenList: children || 'children'
	};

	var childrenListMap = {};
	var nodeIds = {};
	var tree = [];

	for (let d of data) {
		let parentId = d[config.parentId];
		if (childrenListMap[parentId] == null) {
			childrenListMap[parentId] = [];
		}
		nodeIds[d[config.id]] = d;
		childrenListMap[parentId].push(d);
	}

	for (let d of data) {
		let parentId = d[config.parentId];
		if (nodeIds[parentId] == null) {
			tree.push(d);
		}
	}

	for (let t of tree) {
		adaptToChildrenList(t);
	}

	function adaptToChildrenList(o) {
		if (childrenListMap[o[config.id]] !== null) {
			o[config.childrenList] = childrenListMap[o[config.id]];
		}
		if (o[config.childrenList]) {
			for (let c of o[config.childrenList]) {
				adaptToChildrenList(c);
			}
		}
	}
	return tree;
}